//package com.bootdo.activiti.controller;
//
//import com.bootdo.common.config.Constant;
//import com.bootdo.common.controller.BaseController;
//import com.bootdo.common.utils.PageUtils;
//import com.bootdo.common.utils.R;
//import com.fasterxml.jackson.databind.JsonNode;
//import com.fasterxml.jackson.databind.ObjectMapper;
//import com.fasterxml.jackson.databind.node.ObjectNode;
//import org.activiti.bpmn.converter.BpmnXMLConverter;
//import org.activiti.bpmn.model.BpmnModel;
//import org.activiti.editor.constants.ModelDataJsonConstants;
//import org.activiti.editor.language.json.converter.BpmnJsonConverter;
//import org.activiti.engine.ActivitiException;
//import org.activiti.engine.RepositoryService;
//import org.activiti.engine.repository.Deployment;
//import org.activiti.engine.repository.Model;
//import org.activiti.rest.editor.model.ModelEditorJsonRestResource;
//import org.apache.batik.transcoder.TranscoderInput;
//import org.apache.batik.transcoder.TranscoderOutput;
//import org.apache.batik.transcoder.image.PNGTranscoder;
//import org.apache.commons.io.IOUtils;
//import org.apache.commons.lang3.StringUtils;
//import org.slf4j.Logger;
//import org.slf4j.LoggerFactory;
//import org.springframework.beans.factory.annotation.Autowired;
//import org.springframework.http.HttpStatus;
//import org.springframework.web.bind.annotation.*;
//import org.springframework.web.servlet.ModelAndView;
//
//import javax.servlet.http.HttpServletResponse;
//import java.io.*;
//import java.util.List;
//
//import static org.activiti.editor.constants.ModelDataJsonConstants.*;
//
///**
// * @author bootdo 1992lcg@163.com
// */
//@RequestMapping("/activiti")
//@RestController
//public class ModelController extends BaseController{
//    protected static final Logger LOGGER = LoggerFactory.getLogger(ModelEditorJsonRestResource.class);
//
//    @Autowired
//    private RepositoryService repositoryService;
//
//    @Autowired
//    private ObjectMapper objectMapper;
//
//    @GetMapping("/model")
//    ModelAndView model() {
//        return new ModelAndView("act/model/model");
//    }
//
//    @GetMapping("/model/list")
//    PageUtils list(int offset, int limit) {
//        List<Model> list = repositoryService.createModelQuery().listPage(offset
//                , limit);
//        int total = (int) repositoryService.createModelQuery().count();
//        PageUtils pageUtil = new PageUtils(list, total);
//        return pageUtil;
//    }
//
//    @RequestMapping("/model/add")
//    public void newModel(HttpServletResponse response) throws UnsupportedEncodingException {
//
//        //初始化一个空模型
//        Model model = repositoryService.newModel();
//        //设置一些默认信息
//        String name = "new-process";
//        String description = "";
//        int revision = 1;
//        String key = "process";
//
//        ObjectNode modelNode = objectMapper.createObjectNode();
//        modelNode.put(ModelDataJsonConstants.MODEL_NAME, name);
//        modelNode.put(ModelDataJsonConstants.MODEL_DESCRIPTION, description);
//        modelNode.put(ModelDataJsonConstants.MODEL_REVISION, revision);
//
//        model.setName(name);
//        model.setKey(key);
//        model.setMetaInfo(modelNode.toString());
//
//        repositoryService.saveModel(model);
//        String id = model.getId();
//
//        //完善ModelEditorSource
//        ObjectNode editorNode = objectMapper.createObjectNode();
//        editorNode.put("id", "canvas");
//        editorNode.put("resourceId", "canvas");
//        ObjectNode stencilSetNode = objectMapper.createObjectNode();
//        stencilSetNode.put("namespace",
//                "http://b3mn.org/stencilset/bpmn2.0#");
//        editorNode.put("stencilset", stencilSetNode);
//        repositoryService.addModelEditorSource(id, editorNode.toString().getBytes("utf-8"));
//        try {
//            response.sendRedirect("/modeler.html?modelId=" + id);
//        } catch (IOException e) {
//            e.printStackTrace();
//        }
//    }
//
//    @GetMapping(value = "/model/{modelId}/json")
//    public ObjectNode getEditorJson(@PathVariable String modelId) {
//        ObjectNode modelNode = null;
//        Model model = repositoryService.getModel(modelId);
//        if (model != null) {
//            try {
//                if (StringUtils.isNotEmpty(model.getMetaInfo())) {
//                    modelNode = (ObjectNode) objectMapper.readTree(model.getMetaInfo());
//                } else {
//                    modelNode = objectMapper.createObjectNode();
//                    modelNode.put(MODEL_NAME, model.getName());
//                }
//                modelNode.put(MODEL_ID, model.getId());
//                ObjectNode editorJsonNode = (ObjectNode) objectMapper.readTree(
//                        new String(repositoryService.getModelEditorSource(model.getId()), "utf-8"));
//                modelNode.put("model", editorJsonNode);
//
//            } catch (Exception e) {
//                LOGGER.error("Error creating model JSON", e);
//                throw new ActivitiException("Error creating model JSON", e);
//            }
//        }
//        return modelNode;
//    }
//
//    @RequestMapping(value = "/editor/stencilset", method = RequestMethod.GET, produces = "application/json;charset=utf-8")
//    public String getStencilset() {
//        InputStream stencilsetStream = this.getClass().getClassLoader().getResourceAsStream("stencilset.json");
//        try {
//            return IOUtils.toString(stencilsetStream, "utf-8");
//        } catch (Exception e) {
//            throw new ActivitiException("Error while loading stencil set", e);
//        }
//    }
//
//    @GetMapping("/model/edit/{id}")
//    public void edit(HttpServletResponse response, @PathVariable("id") String id) {
//        try {
//            response.sendRedirect("/modeler.html?modelId=" + id);
//        } catch (IOException e) {
//            e.printStackTrace();
//        }
//    }
//
//    @DeleteMapping("/model/{id}")
//    public R remove(@PathVariable("id") String id) {
//        repositoryService.deleteModel(id);
//        return R.ok();
//    }
//
//    @PostMapping("/model/deploy/{id}")
//    public R deploy(@PathVariable("id") String id) throws Exception {
//        if (Constant.DEMO_ACCOUNT.equals(getUsername())) {
//            return R.error(1, "演示系统不允许修改,完整体验请部署程序");
//        }
//        //获取模型
//        Model modelData = repositoryService.getModel(id);
//        byte[] bytes = repositoryService.getModelEditorSource(modelData.getId());
//
//        if (bytes == null) {
//            return R.error("模型数据为空，请先设计流程并成功保存，再进行发布。");
//        }
//
//        JsonNode modelNode = new ObjectMapper().readTree(bytes);
//
//        BpmnModel model = new BpmnJsonConverter().convertToBpmnModel(modelNode);
//        if (model.getProcesses().size() == 0) {
//            return R.error("数据模型不符要求，请至少设计一条主线流程。");
//        }
//        byte[] bpmnBytes = new BpmnXMLConverter().convertToXML(model);
//
//        //发布流程
//        String processName = modelData.getName() + ".bpmn20.xml";
//        Deployment deployment = repositoryService.createDeployment()
//                .name(modelData.getName())
//                .addString(processName, new String(bpmnBytes, "UTF-8"))
//                .deploy();
//        modelData.setDeploymentId(deployment.getId());
//        repositoryService.saveModel(modelData);
//
//        return R.ok();
//    }
//
//    @PostMapping("/model/batchRemove")
//    public R batchRemove(@RequestParam("ids[]") String[] ids) {
//        for (String id : ids) {
//            repositoryService.deleteModel(id);
//        }
//        return R.ok();
//    }
//
//    @RequestMapping(value = "/model/{modelId}/save", method = RequestMethod.PUT)
//    @ResponseStatus(value = HttpStatus.OK)
//    public void saveModel(@PathVariable String modelId
//            , String name, String description
//            , String json_xml, String svg_xml) {
//        try {
//
//            Model model = repositoryService.getModel(modelId);
//
//            ObjectNode modelJson = (ObjectNode) objectMapper.readTree(model.getMetaInfo());
//
//            modelJson.put(MODEL_NAME, name);
//            modelJson.put(MODEL_DESCRIPTION, description);
//            model.setMetaInfo(modelJson.toString());
//            model.setName(name);
//
//            repositoryService.saveModel(model);
//
//            repositoryService.addModelEditorSource(model.getId(), json_xml.getBytes("utf-8"));
//
//            InputStream svgStream = new ByteArrayInputStream(svg_xml.getBytes("utf-8"));
//            TranscoderInput input = new TranscoderInput(svgStream);
//
//            PNGTranscoder transcoder = new PNGTranscoder();
//            // Setup output
//            ByteArrayOutputStream outStream = new ByteArrayOutputStream();
//            TranscoderOutput output = new TranscoderOutput(outStream);
//
//            // Do the transformation
//            transcoder.transcode(input, output);
//            final byte[] result = outStream.toByteArray();
//            repositoryService.addModelEditorSourceExtra(model.getId(), result);
//            outStream.close();
//
//        } catch (Exception e) {
//            LOGGER.error("Error saving model", e);
//            throw new ActivitiException("Error saving model", e);
//        }
//    }
//
//    @GetMapping("/model/export/{id}")
//    public void exportToXml(@PathVariable("id") String id, HttpServletResponse response) {
//        try {
//            org.activiti.engine.repository.Model modelData = repositoryService.getModel(id);
//            BpmnJsonConverter jsonConverter = new BpmnJsonConverter();
//            JsonNode editorNode = new ObjectMapper().readTree(repositoryService.getModelEditorSource(modelData.getId()));
//            BpmnModel bpmnModel = jsonConverter.convertToBpmnModel(editorNode);
//            BpmnXMLConverter xmlConverter = new BpmnXMLConverter();
//            byte[] bpmnBytes = xmlConverter.convertToXML(bpmnModel);
//
//            ByteArrayInputStream in = new ByteArrayInputStream(bpmnBytes);
//            IOUtils.copy(in, response.getOutputStream());
//            String filename = bpmnModel.getMainProcess().getId() + ".bpmn20.xml";
//            response.setHeader("Content-Disposition", "attachment; filename=" + filename);
//            response.flushBuffer();
//        } catch (Exception e) {
//            throw new ActivitiException("导出model的xml文件失败，模型ID=" + id, e);
//        }
//    }
//}
